Try looking here: http://www.mathsyear2000.org/museum/floor3/gallery9/gal2_2p3.html
There are a variety of rods, such as curtain rods, lightning rods, stirring rods, etc. They are generally made from metal or wood, but stirring rods can be made of glass or plastic.
Spongy bone is not filled with cartilage. Spongy bone is composed of trabeculae, which are interconnected plates and rods. Cartilage is a different type of connective tissue that can be found in joints and in the growth plates of bones.
Trabeculae
There are many types of bracelets made of bone. Normally the bone is wittled into beads in order to make a bracelet. Traditionally this is done in African countries. The bone is wittled down into beads or rods using a bone needle and then the beads are strung on thread. These bone beads can also be decorated or stained with certain types of paint in order to achieve a certain color or style.
Drain rods are plumbing equipment that are mostly used to unblock drains and sewers. Usually, such rods are made of Polypropylene (also known as poly-propane).
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fenwick acts like its still an American company but their rods are made in china, stop buying them
Most shower curtain rods are made of stainless steel. The stainless steel rods come in a variety of shapes and sizes and usually have a chrome finish.
Control rods are made of high neutron capture materials (e.g, Boron, Cadmium, and Gadolinium)
Napier published his version of rods in a work printed in Edinburgh,Scotland, at the end of 1617 entitled Rabdologiæ.
Metal rods and pins/screws as far as i know but im sure theres more
The Cancellous, or spongy bone is made of Trabeculae, which are thin rods or plates of bone that often run in the same direction as the stress applied to the bone. Stress on the bone may be in the form of gravity, or it may occur due to common force applied to the limb. Which can ultimately cause weakness in your bones.